{"action":"Upgrade matrix-synapse to 1.27.0 or later.","affected":[{"fixed":"1.27.0","introduced":"0"}],"component":"matrix-synapse","cve_ids":["CVE-2021-21333"],"ecosystem":"PyPI","epss":0.01354,"exploited":false,"fixed_versions":["1.27.0"],"ghsa_id":"GHSA-c5f8-35qr-q4fm","id":"tcs_01M5KGB76KHKGKTNFGJK2C37N2","modified_at":"2023-11-08T04:04:41.701060Z","published_at":"2021-03-26T20:15:00Z","references":["https://osv.dev/vulnerability/PYSEC-2021-134","https://github.com/matrix-org/synapse/pull/9200","https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df","https://github.com/matrix-org/synapse/releases/tag/v1.27.0","https://github.com/matrix-org/synapse/security/advisories/GHSA-c5f8-35qr-q4fm"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2021-134","url":"https://osv.dev/vulnerability/PYSEC-2021-134"}],"summary":"Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the no"}